diff --git a/examples/truffle/package.json b/examples/truffle/package.json
index c1d2858..01bf8bd 100644
--- a/examples/truffle/package.json
+++ b/examples/truffle/package.json
@@ -26,6 +26,6 @@
     "@openzeppelin/contracts": "4.3.2",
     "@truffle/hdwallet-provider": "^1.4.3",
     "truffle": "^5.4.6",
-    "truffle-plugin-verify": "^0.5.11"
+    "truffle-plugin-verify": "^0.5.28"
   }
 }
diff --git a/examples/truffle/yarn.lock b/examples/truffle/yarn.lock
index 029b0ff..4ee9823 100644
--- a/examples/truffle/yarn.lock
+++ b/examples/truffle/yarn.lock
@@ -2779,12 +2779,12 @@ axios@^0.20.0:
   dependencies:
     follow-redirects "^1.10.0"
 
-axios@^0.21.1:
-  version "0.21.1"
-  resolved "https://registry.yarnpkg.com/axios/-/axios-0.21.1.tgz#22563481962f4d6bde9a76d516ef0e5d3c09b2b8"
-  integrity sha512-dKQiRHxGD9PPRIUNIWvZhPTPpl1rf/OxTYKsqKUDjBwYylTvV7SjSHJb9ratfyzM6wCdLCOYLzs73qpg5c4iGA==
+axios@^0.26.1:
+  version "0.26.1"
+  resolved "https://registry.yarnpkg.com/axios/-/axios-0.26.1.tgz#1ede41c51fcf51bbbd6fd43669caaa4f0495aaa9"
+  integrity sha512-fPwcX4EvnSHuInCMItEhAGnaSEXRBjtzh9fOtsE6E1G6p7vl7edEeZe11QHf18+6+9gR5PbKV/sGKNaD8YaMeA==
   dependencies:
-    follow-redirects "^1.10.0"
+    follow-redirects "^1.14.8"
 
 babel-code-frame@^6.26.0:
   version "6.26.0"
@@ -5262,6 +5262,11 @@ follow-redirects@^1.10.0:
   resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.13.3.tgz#e5598ad50174c1bc4e872301e82ac2cd97f90267"
   integrity sha512-DUgl6+HDzB0iEptNQEXLx/KhTmDb8tZUHSeLqpnjpknR70H0nC2t9N73BK6fN4hOvJ84pKlIQVQ4k5FFlBedKA==
 
+follow-redirects@^1.14.8:
+  version "1.15.1"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.15.1.tgz#0ca6a452306c9b276e4d3127483e29575e207ad5"
+  integrity sha512-yLAMQs+k0b2m7cVxpS1VKJVvoz7SS9Td1zss3XRwXj+ZDH00RJgnuLx7E44wx02kQLrdM3aOOy+FpzS7+8OizA==
+
 for-each@^0.3.3:
   version "0.3.3"
   resolved "https://registry.yarnpkg.com/for-each/-/for-each-0.3.3.tgz#69b447e88a0a5d32c3e7084f3f1710034b21376e"
@@ -10378,15 +10383,16 @@ trim-right@^1.0.1:
   resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
   integrity sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=
 
-truffle-plugin-verify@^0.5.11:
-  version "0.5.11"
-  resolved "https://registry.yarnpkg.com/truffle-plugin-verify/-/truffle-plugin-verify-0.5.11.tgz#f89db1870c1a86bbca913f3dc476aef310ad452d"
-  integrity sha512-IL8DDsA3YCUQcrRXtarTEXoZJeb2Rlj8jwNjdiWWyDZ7r/EQZndJooorWo19qDpZf9s8ydpvTE/Bb/uyna6Zag==
+truffle-plugin-verify@^0.5.28:
+  version "0.5.28"
+  resolved "https://registry.yarnpkg.com/truffle-plugin-verify/-/truffle-plugin-verify-0.5.28.tgz#e0d3811c366e0625656ea97f7443ef897f004332"
+  integrity sha512-wmWJsJPq9Zj/FaJVXISwnL0mOGGKLgSCbOnwXzxmuv+0iRcUuccFAianYP4Ru/QjzsD2T6pQ7TUjVGLEcCkMtg==
   dependencies:
-    axios "^0.21.1"
+    axios "^0.26.1"
     cli-logger "^0.5.40"
     delay "^5.0.0"
     querystring "^0.2.1"
+    tunnel "0.0.6"
 
 truffle@^5.4.6:
   version "5.4.6"
@@ -10443,6 +10449,11 @@ tunnel-agent@^0.6.0:
   dependencies:
     safe-buffer "^5.0.1"
 
+tunnel@0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/tunnel/-/tunnel-0.0.6.tgz#72f1314b34a5b192db012324df2cc587ca47f92c"
+  integrity sha512-1h/Lnq9yajKY2PEbBadPXj3VxsDDu844OnaAo52UVmIzIvwwtBPIuNvkjuzBlTWpfJyUbG3ez0KSBibQkj4ojg==
+
 tweetnacl-util@^0.15.1:
   version "0.15.1"
   resolved "https://registry.yarnpkg.com/tweetnacl-util/-/tweetnacl-util-0.15.1.tgz#b80fcdb5c97bcc508be18c44a4be50f022eea00b"